Yes, when the Germans took over the garrison of the Norwegian Infantery Regiment no.15 at Elvegaardsmoen (at Bjerkvik) on the 9th of april 1940. They took over brand new uniforms, guns, ammunition, radio equipment etc that the Norwegian soldiers on duty at that time didn’t have. This was because of the thinking then that all old materials should be used before new was handed out. This saved alot of German soldiers life actually. Even the Fallshirmjägers trew away their paratrooper shoes and got norwegian soldiers beksomboots that protected them better against frostbite. The Gebirgsjägers had good backpacks, but you see them also discarding their backpacks and using norwegian insted because they had frames that made them better to use when carrying heavy loads.
Here you have Gebirgsjägers using Norwegian Bergans backpacks in the Narvik mountains in 1940.
Here you have the Bergansframe for carrying ammuniton and watercan boxes for the Colt M/29 heavy machinegun and the frame also fits for ammunition boxes for the Norwegian 81mm mortar.